Rolled-steel chill



Feb. 15, 1927'.

1 1,618,016 W. W. LECK ROLLED STEEL CHILL Fil ed Aug. 2 1924,

I A HIM I g 1." I J I Patented Feb. 15, 1927.

UNITED STATES PATENT OFFICE.

WALTER W. LECK, OF ST. LOUIS, MISSOURI, ASSIGNOR T SCULLIN' STEEL com:-

]?ANY, OF ST. LOUIS,'MISSOURI, A CORPORATION OFLMISSOURI.

ROLLED-STEEL CHILL.

Application filed August 28, 1924. Serial No. 734,587.

This invention relates to a new and improved chill for use in casting Operations and more particularly in a chill formed of rolled steel. 7

As is well known in the art, metal chills are commonly used to prevent cracking'of castings, particularly at re-entrant angles upon shrinkage stresses due to cooling. These chills are intended to remain in the mold or to be readily removed from the casting by a blow if they adhere thereto.

To fulfil these requirements it is necessary that the chills have a smooth surface. To secure such surface upon cast chills, it is necessary to resort to grinding or turning operations. These operations materially increase the cost of the chills, which are used in comparatively large quantities. The operation also results in the breaking down of the surface texture of the metal. 7

It is an object of thepresent invention to provide a new and improved chill having a smooth rolled surface.

It is a further object to provide a chill of this character, which is adapted for use without treatment of the chill surface after the rolling operation whereby the chills may be produced at small cost. I

It is also an object to provide a chill having a rear flange so formed as to retain the chill in the mold.

Other and further objects will appear as the description proceeds.

I have shown certain and preferred forms 35 of chills and their application in the accompanying drawings in which- Figure 1 is a plan view of a truck side frame showing the location of chills relative to the frame in the casting operation.

Figures 2 and 3 are cross sections of two forms of chills and Figure 4 is a form of chill.

Referring to'Figure 1, the chills 11 are placed at the upper corners of the bolster opening in the side frame. The chills 11 are shown on an enlarged scale. in Figure 2. The chills have the rounded, smooth, metal engaging surface 12 and the rearwardly extending retaining flange 13. v

. The portion 14 of the flange located adjacent the body of the chill is of less area tion.

smoothly shown are illustrative perspective view of a third than the more distant portion of the flange;

This form of flange assists materially in retalnlng the chill in its in Figure 3 are placed at the lower corners of the bolster opening as shown in Figure 1. Theichills 16 shown in Figure 4 are placed at the journal box fit of the side frame as shown in Figure 1. The forms shown in Figures 3 and 4 are similar to those shown in Figure 2 with the exception that the surface adapted for metal contact has been made to fitthe'desired curvature of the casting. It is to'be understood that proper position-in the mold. The chills 15 of the form shownv the metal contact surface may be made of any desired contour.

Slnce these forms of chills are of uniform cross section throughout their length, they may be readily formed a rolling opera- R-olled steel chills of this type can therefore, be made at small cost and the pense of these operations is avoided and the texture of the surface metalneed not be disturbed. i

It is to be understood that the exact forms only as the form of the chills will be modified according to the particular casting to be made, and I contemplate such changes as come within the spirit and scope of the appended claims.

I claim: V 1. A chill for use in casting operations rolled surface will be satisfactory for the metal contact surface of the chill without machining or grinding, thus the ex' comprising a metal shape having a smooth rolled surface adapted for contact with the metal to be chilled, and having rearwardly extending portions adapted to secure the chill in the mold.

2. A chill for'use in casting operations 7 comprising a metal shape having a smooth rolled surface adapted for contact with the metal to be chilled and having a rearwardly extending retaining flange extending lengthwise of the chill, an intermediate portion. of the flange being of less cross section thanportions of the flange more distant from the chill body.

Signed at St. Louis, Mo., this 19th day of August, 1924'. r

WALTER W. CK. 

